Optical coherence transfer over 50-km spooled fiber with frequency instability of 2×10-17 at 1s

We demonstrate coherent transfer of an ultra-stable optical frequency at 192.8 THz over 50-km spooled fiber. Random phase noise induced by environmental disturbance through fiber is detected and suppressed by feeding a correctional signal into an acousto-optic modulator. After being compensated, the...

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Veröffentlicht in:	中国物理B：英文版 2015 (8), p.362-365
1. Verfasser:	马超群吾利飞蒋燕义于洪浮毕志毅马龙生
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Schlagworte:	coherence fiber frequency floor instability noise optical transfer spooled
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creator	马超群吾利飞蒋燕义于洪浮毕志毅马龙生
description	We demonstrate coherent transfer of an ultra-stable optical frequency at 192.8 THz over 50-km spooled fiber. Random phase noise induced by environmental disturbance through fiber is detected and suppressed by feeding a correctional signal into an acousto-optic modulator. After being compensated, the fiber-induced frequency instability is 2×10-17 at 1-s averaging time and reaches 8×10-20 after 16 h. The noise floor of the compensation system could be as low as 2×10-18 at 1-s averaging time.
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subjects	coherence fiber frequency floor instability noise optical transfer spooled
title	Optical coherence transfer over 50-km spooled fiber with frequency instability of 2×10-17 at 1s
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